Quick_Start_Guide_for_SoftAP
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QuickStartGuideforstarting
Soft-APmode
(A) How to start Soft-AP mode:
(1) disable network management or other wireless tools, e.g. wpa_supplicant
(2) uncompress the driver and then compile the driver
./make
(3) insmod 8192cu.ko
(4) ifconfig wlan0 up
(5) ifconfig wlan0 192.168.0.1 (using the static ip for testing) (6) compile HOSTAP, unpack wpa_supplicant_hostapd-0.8_rtw_20120803.zip in the folder (wpa_supplicant_hostapd-0.8\hostapd)
./make
(7) start hostapd daemon:
./hostapd rtl_hostapd.conf -B
(B) Configure file for Soft-AP mode setting:
(1) rtl_hostapd.conf is the configure file for functions setting.
(2) the major variable setting in the rtl_hostapd.conf configure file,
(i) basic configuration
interface=wlan0
ssid=rtwap
# channel 1-14 is 2.4 GHz ; channel 36, 40, 44, 46, 48, 52, 56, 60,
# 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 149,
# 153, 157, 161 is 5GHz
# The channels that are available for use in a particular country differ
# according to the regulations of that country.
channel=6
# Operation mode (a = IEEE 802.11a, b = IEEE 802.11b, g = IEEE
# 802.11g, Default: IEEE 802.11b )
hw_mode=g
#If the wireless interface is included in a bridge,
#an additional configuration parameter, bridge, is needed
bridge=br0
(ii) security mode configuration
# This field is a bit field that can be used to enable WPA
# (IEEE 802.11i/D3.0)
# and/or WPA2 (full IEEE 802.11i/RSN):
# bit1 = IEEE 802.11i/RSN (WPA2) (dot11RSNAEnabled)
wpa=2
# wpa_passphrase=secret passphrase
wpa_passphrase=87654321
# Set of accepted key management algorithms
# (WPA-PSK, WPA-EAP, or both).
wpa_key_mgmt=WPA-PSK
# Set of accepted cipher suites (encryption algorithms)
# for pairwise keys
wpa_pairwise=CCMP
(iii) IEEE 802.11n related configuration
# ieee80211n: Whether IEEE 802.11n (HT) is enabled
# 0 = disabled (default)
# 1 = enabled
ieee80211n=1
# ht_capab: HT capabilities (list of flags)
# Supported channel width set: [HT40-] = both 20 MHz and 40 MHz
# with secondary channel below the primary channel;
# [HT40+] = both 20 MHz and 40 MHz with secondary channel upon
# the primary channel
# Note:There are limits on which channels can be used with HT40- and
# HT40+.Following table shows the channels that may be available for
# HT40- and HT40+ use per IEEE 802.11n Annex J:
# freq HT40- HT40+
# 2.4 GHz 5-13 1-7 (1-9 in Europe/Japan)
# 5 GHz 40,48,56,64 36,44,52,60
# Short GI for 20 MHz: [SHORT-GI-20] (disabled if not set)
# Short GI for 40 MHz: [SHORT-GI-40] (disabled if not set)
ht_capab=[SHORT-GI-20][SHORT-GI-40][HT40]
(iv) Check the station connected to softap using hostapd_cli:
./hostapd_cli all_sta
(v) How to start WPS process as internal registrar?
1. for PIN code = 12345670
./hostapd_cli wps_pin any 12345670
2. for PBC
./hostapd_cli wps_pbc
(C) How to get the best channel?
1. Assume the WLAN interface is wlan0 and the IC is RTL8192DU-VS:
ifconfig wlan0 up
iwlist wlan0 scan
cat /proc/net/rtl819xD/wlan0/best_channel
Notes: If your WLAN interface is not wlan0, please change it to your
used interface. (ex: wlan51)
If your driver IC is not RTL8192DU-VS, please change the rtl819xD to your
used IC. (ex: rtl819xC, rtl8188eu …etc)
